<template>
  <div class="designEcharts">
    <div id="designEcharts"></div>
  </div>
</template>

<script>
// import { getCountCategory } from '@/api/portal/screen/screen'
export default {
  data() {
    return {
    
    }
  },
  mounted() {
    this.initChart();
  },
  methods: {
    //企业
    initChart() {
      const myChart = this.$echarts.init(document.getElementById("designEcharts"));
      let option;
      // getCountCategory().then(res=>{
      //   if(res){
          let data = [
            { value: 422, name: '本科及以上'},
            { value: 92, name: '有职业资格证' },
            { value: 63, name: '专科生' },
          ]
          let titData = data.map( i=>{
            return i.categoryName
          })
        const optionsData = data
        const series = this.getPie3D(optionsData)
        series.push({
          name: 'pie2d',
          type: 'pie',
          label: {
            opacity: 1,
            fontSize: 13,
            lineHeight: 20
          },
          labelLine: {
            length: 30,
            length2: 30
          },
          startAngle: -30,
          clockwise: false,
          radius: ['20%', '40%'],
          center: ['50%', '47%'],
          data: optionsData,
          itemStyle: {
            opacity: 0
          }
        })
        option = {
          color:['#00d7eb', '#81f1c3', '#0072bb','#5A5476','#1869A0','#FF9393'],
          legend: {
            show:false,
            tooltip: {
              show: false
            },
            
            data: titData,
            bottom: '10%',
            textStyle: {
              color: '#fff',
              fontSize: 12
            }
          },
          tooltip: {
            show:false,
            formatter: (params) => {
              if (params.seriesName !== 'mouseoutSeries' && params.seriesName !== 'pie2d') {
                const bfb = (
                  (option.series[params.seriesIndex].pieData.endRatio -
                    option.series[params.seriesIndex].pieData.startRatio) *
                  100
                ).toFixed(2)
                return (
                  `${params.seriesName}<br/>` +
                  `<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
                  `${bfb}%`
                )
              }
            }
          },
          title: {
            text: '',
            x: 'center',
            top: '20',
            textStyle: {
              color: '#fff',
              fontSize: 22,
              show:false
            }
          },
          labelLine: {
            show: true,
            lineStyle: {
              color: '#7BC0CB'
            }
          },
          label: {
            show: true,
            position: 'outside',
            // formatter: '{d}% \n { white | b }',
            formatter: function (params) {
              if (params.name) {
                // return params.percent  + '% \n' + '{white|' + params.name +'}'
                return params.value  + ' \n' + '{white|' + params.name +'}'
              }
            },
            rich: {
              white: {
                color: '#fff',
                fontSize: 12,
                padding: [0, 0, 0, 0]
              }
            },
          },
          xAxis3D: {
            min: -1,
            max: 'dataMax'
          },
          yAxis3D: {
            min: -1,
            max: 'dataMax'
          },
          zAxis3D: {
            min: -1,
            max: 'dataMax'
          },
          grid3D: {
            show: false,
            top:'-10%',
            left:'5%',
            boxHeight: 30, // 三维笛卡尔坐标系在三维场景中的高度
            viewControl: {
              alpha: 30,
              // beta: 38,//x轴旋转角度
              distance: 210,
              autoRotate: false, // 自动旋转
              zoomSensitivity: false, //是否允许缩放
            }
          },
          series: series
        }
        option && myChart.setOption(option);
        window.addEventListener("resize", function () {
          myChart.resize();
        });

      // }
    //   })    
    },
    // 生成扇形的曲面参数方程，用于 series-surface.parametricEquation
    getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, h) {
      // 计算
      const midRatio = (startRatio + endRatio) / 2
      const startRadian = startRatio * Math.PI * 2
      const endRadian = endRatio * Math.PI * 2
      const midRadian = midRatio * Math.PI * 2
      // 如果只有一个扇形，则不实现选中效果。
      if (startRatio === 0 && endRatio === 1) {
        isSelected = false
      }
      // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
      k = 1
      // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
      const offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0
      const offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0
      // 计算高亮效果的放大比例（未高亮，则比例为 1）
      const hoverRate = isHovered ? 1.05 : 1
      // 返回曲面参数方程
      return {
        u: {
          min: -Math.PI,
          max: Math.PI * 3,
          step: Math.PI / 32
        },
        v: {
          min: 0,
          max: Math.PI * 2,
          step: Math.PI / 20
        },
        x: function (u, v) {
          if (u < startRadian) {
            return offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate
          }
          if (u > endRadian) {
            return offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate
          }
          return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate
        },
        y: function (u, v) {
          if (u < startRadian) {
            return offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate
          }
          if (u > endRadian) {
            return offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate
          }
          return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate
        },
        z: function (u, v) {
          if (u < -Math.PI * 0.5) {
            return Math.sin(u)
          }
          if (u > Math.PI * 2.5) {
            return Math.sin(u) * h * 0.1
          }
          return Math.sin(v) > 0 ? 1 * h * 0.1 : -1
        }
      }
    },
    getPie3D(pieData, internalDiameterRatio, distance, alpha, pieHeight, opacity = 1) {
      const series = []
      let sumValue = 0
      let startValue = 0
      let endValue = 0
      const legendData = []
      const k =
        typeof internalDiameterRatio !== 'undefined'
          ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
          : 1 / 3
      // 为每一个饼图数据，生成一个 series-surface 配置
      for (let i = 0; i < pieData.length; i += 1) {
        sumValue += pieData[i].value
        const seriesItem = {
          name: typeof pieData[i].name === 'undefined' ? `series${i}` : pieData[i].name,
          type: 'surface',
          parametric: true,
          wireframe: {
            show: false
          },
          pieData: pieData[i],
          pieStatus: {
            selected: false,
            hovered: false,
            k: k
          }
        }
        if (typeof pieData[i].itemStyle !== 'undefined') {
          const itemStyle = {}
          if (typeof pieData[i].itemStyle.color !== 'undefined') {
            itemStyle.color = pieData[i].itemStyle.color
          }
          if (typeof pieData[i].itemStyle.opacity !== 'undefined') {
            itemStyle.opacity = pieData[i].itemStyle.opacity
          }
          seriesItem.itemStyle = itemStyle
        }
        series.push(seriesItem)
      }
      // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
      // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
      for (let i = 0; i < series.length; i += 1) {
        endValue = startValue + series[i].pieData.value
        series[i].pieData.startRatio = startValue / sumValue
        series[i].pieData.endRatio = endValue / sumValue
        series[i].parametricEquation = this.getParametricEquation(
          series[i].pieData.startRatio,
          series[i].pieData.endRatio,
          false,
          false,
          k,
          series[i].pieData.value
        )
        startValue = endValue
        legendData.push(series[i].name)
      }
      return series
    }  
  }
}
</script>

<style lang="scss" scoped>
  .designEcharts{
    width: 100%;
    height: 100%;
    #designEcharts{
      width: 100%;
      height: 110%;
    }
  }
</style>